7 Replies Latest reply: Jan 19, 2013 6:44 PM by AllenETD
LaRizzo Level 1 Level 1 (10 points)

Hey guys

 

So, long story short:

 

I had Mountain Lion on my system an wanted to downgrade to Snow Leopard (it's what I was used to) but after successfully downgrading I ran into a lot of compatibility problems with hardware and more importantly software. I made a back up whilst I was using Mountain Lion with time machine.

 

Now, I need to UPGRADE back to Mountain Lion. Right now I am sitting infront of the Mac OS X installer screen after booting the Snow Leopard disc (the one which originally came with my 2010 MacBook) and I have selected "restore with time machine backup". So, my question is: can I restore my system back to ML just like it was before I downgraded? Remember, it's a Time Machine backup, but a Snow Leopard disc. Because the current software on the mac is an earlier OS, will the system understand what OS is on the backup?

 

Any help would be great.

 

And thanks in advance.

 

Sam


MacBook Pro, OS X Mountain Lion (10.8.2), 13", Mid 2010.
  • 1. Re: I'm in a bit of a pickle...
    AllenETD Level 1 Level 1 (125 points)

    Hold down Command + R at startup, and follow the onscreen instructions to install Mountain Lion.

  • 2. Re: I'm in a bit of a pickle...
    LaRizzo Level 1 Level 1 (10 points)

    Thanks for the reply, but I'm not sure whether you read my post thoroughly. I'm already there. I want to know whether I can install a Mountail Lion backup on a Snow Leopard system.

  • 3. Re: I'm in a bit of a pickle...
    LaRizzo Level 1 Level 1 (10 points)

    Additional Info: Snow Leopard was the OS that originally came with my MacBook

  • 4. Re: I'm in a bit of a pickle...
    AllenETD Level 1 Level 1 (125 points)

    You can install Mountain Lion over Snow Leopard, but not the other way around (at least it isn't possible, unless you do some tweaking to the OS). I'm not sure if I'm understanding the question correctly though.

  • 5. Re: I'm in a bit of a pickle...
    LaRizzo Level 1 Level 1 (10 points)

    Thanks,

     

    Basically it's a Mountain Lion TM backup, and I want to restore it onto a Snow Leopard machine. I'm a bit nervous though, as apple says "only use a backup to restore a computer that was the source of the backup" but since I made that backup, I've erased the hard drive in order to install Snow Leopard.

  • 6. Re: I'm in a bit of a pickle...
    PAHU Level 6 Level 6 (14,520 points)

    I don't believe you can boot from the 10.6 disc and restore the 10.8 TM.

     

    What you may have to do is install 10.6 onto the now empty HD. Don't select to restore any of your TM data. Just install 10.6 and then update it to 10.6.8. Then you can open App Store and download the 10.8 installer. Then you can run this and select to restore your data from your TM backup.

  • 7. Re: I'm in a bit of a pickle...
    AllenETD Level 1 Level 1 (125 points)

    Ah, I see what you are saying. If you are lucky you may get some of your files moved from the 10.8 backup to 10.6 (not your settings), but it is unlikely. I highly recommend upgrading to the latest version of OS X.